Roofing joint



April 30, 1929- N. A. OCHILTREE 1,710,890

ROOFING JOINT Filed April 25, 1928 Patented Apr. 30, 1929.

- y 1,710,890` UNITED STATES PATENT OFFICE.

NED A. DCHILTREE, OIF OMAHA, NEBRASKA, ASSIGNOB TO CONCRETE ENGINEERINGCOMPANY, F OMAHA, NEBRASKA, A CORPORATION 0F NEBRASKA..

, Application mea Apru- 23,

The invention herein disclosed pertains to improvements in sheet metalroofing of either the corrugated or uhcorrugated type.

One ot the principal objects of the invention is to provide a sheetmetal roong, the individual plates or sheets of which have their' edgesso arranged and constructed that they may be overlapped with one anotherto provide a seam or joint which will eliminate leakage and otherdetrimental edects caused by the capillary action of water, and o suchvconstruction that in case water is driven between the edges ot the sheetat the joint by the wind or carried therethrough by capillary action,the water will be caught in one or more gutters and prevented fromreaching the sheathing or rooting boards.

Another importantobj ect is so to form the marginal ends of the sheetthat the lap end portions will be noncomplementary, that is, will notconform completely with one another yet similar edges ot anyvtwo sheetswill be complementary v so that two or more sheets may be nested torshipping and the like.

Uther objects as well as the advantages, functions-and uses of theinvention will be or should become readily apparent after reading thefollowing description and claims and after viewing the drawing, inwhich:

Fig. l is an end elevation of a portion of a s roof showing my jointapplied to corrugated sheets,

Fig. Q is a top plan view of a section thereoi, and

hig. 3 is an edge elevation of a more or less flat metal rooting sheetshowing my invention applied thereto.

Referring more particularly to the draw ing and tor the present to Figs.l and 2, a corrugated sheet generally designated has its lapped endshaped to provide a relatively short or small ridge 3, a gutter 4, arelatively high ridge 5, a gutter 6 and a second relatively short orsmall ridge 7 proceeding toward the edge oit the sheet. l/Vhile'the formof the invention illustrated contemplates theformw, tion oit the shortridge 7 and the termination or edge of the sheet as at 8 it Will beobserved that the edge of the sheet may fall anywhere between the ridge7 and the gutter 6 pr0vided\ the gut-ter 6 is retained.

The lapping lend of each sheet is provided with a ridgegenerallydesignated 9 of Sullicient height and breadth to completely span thelapped edge of an adjacent sheet includ- 1923. Serial No. 272,051.

ing the ridges 3 and 5 and the gutters 4 and 6 and in the illustratedform of the invention the ridge 7 also. The ridge 9 is provided in turnwith a smaller ridge ll adapted to conform to a substantial portion ofthe transverse width of the crest of the ridge and to seat thereon andwhile in the illustrated forni of the invention the ridge 9 also seatsupon and is supported by the outer sides ofthe ridges 3 and 7, that is,those sides farthest from the center or high ridge 5, it is onlyessential that its edge 12 or a marginal portion adjacent such edge seatupon and be supported by the outer side of the ridge 3. In other words,if the lapped edge 8.terminates between the crest of the ridge 7 and thegutter 6 the ridge 9 at its inner side will not be supported by thelapped end portion between its ridge 5 and its edge 8.

The construction illustrated in F ig. 3 differs from that illustrated inFigs. l and 2 only in 'that the sheet 'is uncorrugatedfbetween itslapping and lapped edges or ends except for a single strengthening ribor ridge 13 which extends substantially parallel to the lapped andlapping ridges of the end portions of the sheet. But in either formofthe invention the structure of the joint is the important feature. As'will be observed Vthe joints are preferably arranged to fall along aroof board or boards 14 and to be secured thereto by nails or the likel5 which pass through the ridges ll and 5 into the boards 14, thusproviding a very rigid and strong joint which is practically leak proof.Then.

too, when the sheets are to be shipped they will readily nest with oneanother when they are assembled with their lapped and lapping endportions respectively together.

Since various modifications and changes may be made in the forms of theinvention illustrated and described without departing from the scope andspirit of the invention I `do not desire to be limited except by thespirit of the invention and the scope ot the appended claims.

Iclaim:

l. A sheet metal rooting comprising -a plurality of metal sheetsoverlapping one another at their edges, the lapped edge of each sheetico having two spaced, short ridges each with depending sloping sidesand an intermediate high ridge having downwardly slopingsides jomin theinner sides of the short ridges to provi e gutters, the lapping vedge ofeach sheet having a single upwardly rising ridge of a width to span boththe short ridges and the high ridge of the lapped edge and having acrest portion adapted to seat upon and conform to the top and arelatively small portion only of the sides of the high ridge and to seatupon portions of the outer sides of short ridges of the lapped edge.

v ing toward the edge el' the sheet, a transversely curved and upwardlyconvex ridge of suiiieient height and breadth to span said gutters andridges of the lapped end portion, said lapping ridge having a smallertransverselyeurved and upwardly convex ridge adapted to con forni to andseat upon the crest and upper portions only of the sides of said highridge of the lapped sheet end.

3. A sheet metal rooting comprising a plurality of metal sheetswithoverlapping edges, each sheet being formed along the lapped edgewith eorrugations providing three subthe stantially parallel ridges, thecenter ridge being higher than either of the others and a portion ofsaid lapped edge between the eenter ridge and each shorter ridge lyingin substantially the same plane for Contact with an underlying support,and along the opposite lapping edge with a' single ridge overlapping thesaid three ridges of an adjacent sheet and receiving support from saidthree ridges only along the top of the center ridge and 'the outer sidesadjacent the top of each of the smaller ridges.

Ll. A sheet metal rooting comprising a plurality of n'ietal sheetsoverlapping one another at their edges, the lapped edge of each sheethaving two short rounded top ridges each with downwardly sloping sidesand an intermediate high ridge, the lapping edge oi' each sheet having asingle upwardly rounded ridge adapted to span the said three ridges ofthe lapped edge and having a substantially central portion pressedupwardly to provide a sinall ridge adapted to seat upon andsubstantially conform to the top of the center ridge of the lapped edge,the lapping edge being spaced :troni the lapped edge between the shortand high ridges or the lapped edge.

ln witness ot the foregoing l aliix iny signature.

NED it... CHLTREE.

